PV-PRO™ 89 System - APComPower, Inc.

PV-PRO 89 System
A Fineness, Capacity & Operational Flexibility
Solution for Coal Pulverizers
Power
With Alstom behind me...
I’m in control!

Alstom helps keep you in control
WIth Over 100 yeArS’ OF PulverIzer And
POWer ServICe exPertISe And exPerIenCe |
Alstom offers the logistics, experience, technology
and innovation to help keep you in control. Our
installed base includes over 400 GW of power
generation capacity. We are the “pulverizer system
experts”, with a deep understanding and a full
range of offerings across many pulverizer types,
including those from Alstom, B&W, riley and
Combustion engineering. With capabilities like
that, it is easy to see why, with Alstom behind you,
you’re in control.
Pv-PrO 89 SyStem – SuPerIOr
PerFOrmAnCe IS juSt WeekS AWAy | As the
world’s leading supplier of parts and services for
coal pulverizing systems Alstom is well qualified to
help you extend your operating hours and increase
pulverizer performance. the Pv-PrO 89 System
is an integrated Performance, recovery and
Optimization (PrO) system for your mPS®-type
Pulverizers.
Simply put,
PV-Pro 89 SyStem
iS deSigned to:
1 | manage and reduce pulverizer wear to extend
operation time between outages
2 | Improve coal fineness to facilitate in-furnace
emissions reduction
3 | maximize pulverizer capacity to improve your
operational flexibility with a wider range of coal types,
without shutting down your pulverizer for adjustment.
A World of ExpEriEncE
with our AdVAnced comPutAtionAl fluid
dynAmicS (cfd) modeling techniqueS we
APProAch your PulVerizer AS An integrAted
SyStem, generAting SynergiStic SyStem
benefitS with eAch comPonent.

otating throat...
BeneFItS
improvEs EfficiEncy And ExtEnds pulvErizEr lifE
the deSIGn OF AlStOm’S rOtAtInG
thrOAt | features wing tips that are designed
to lower pressure drop and reduce erosioncausing
turbulence. A shallow angle directs air
strategically into the grinding area, optimizing air
flow for better coal transport and pyrite rejection.
Proper wing spacing, which lowers the coal
velocity within the pulverizer, along with chrome
carbide liner plates, inhibit wear, resulting in
extended pulverizer life.
Alstom’s flexible design accommodates worn
pulverizers with out-of-round housings and outof-center
rotating assemblies. Because they are
welded to the ring seat and pulverizer housing,
not bolted, Alstom’s rotating throat assemblies
are easy to install and maintain. And segments do
not fall out of alignment.
1 | lower coal rejects 3 | reduced pulverizer wear
2 | less pressure drop 4 | improved coal transport
And thiS meAnS:
1 | Improved efficiency
2 | e x tended operations
3 | better control of coal
fineness for better
combustion

Low Profile Grinding Zone...
AlStOm hAS PerFeCted the lOW
PrOFIle GrIndInG zOne WIth A 20%
lArGer GrIndInG AreA | this means
coal recirculates less for more efficient
operation and better “first run yield”
classification. Unlike competitive standard
designs that don’t reach peak performance
until 50% of wear life, the Alstom grinding
system is at peak performance the
moment you start operating,
with the same
or better wear
life.
pEAk pErformAncE from dAy 1
BeneFItS
1 | Improved efficiency
2 | reduced pulverizer erosion
3 | extended time between outages
20% lArger grinding AreA

engineered Adjustable Static classifier
ExtErnAl clAssificAtion sEtting/consistEnt coAl finEnEss
AlStOm’S PrOPrIetAry AdjuStABle
StAtIC ClASSIFIer AllOWS OPerAtOrS
tO AdjuSt the ClASSIFICAtIOn
SettInG externAlly | Adjustments can
be made while the pulverizer is operating
to account for factors such as differing
coal types and pulverizer wear. ease of
adjustment allows consistent coal fineness
over the life of the pulverizer. the inverted
extended cone design eliminates moving
parts for improved fineness. No flapper
doors to come loose, jam or fall off. Alstom
uses advanced CFd modeling techniques to
create the most efficient and smooth flow
of coal through the entire pulverizer.
BeneFItS
1 | easy adjustment
2 | better performance
3 | lower maintenance than any other design

50 mesh
00 mesh
00 mesh
)
% Thru Mesh
85
100
90
80
70
60
utIlIzInG the externAl lInkAGe,
COAl FIneneSS WAS AdjuSted
tO delIver the OPtImum
the
COmBuStIOn
results
COndItIOnS WIth
Speak for themselves
the leASt AmOunt OF erOSIOn.
the reSultS
improved FineneSS Control
Note:
Classifier Setting Control Range: 3 - 7
Classifier Sweep @ 78 tph
PulverIzer OPerAtInG rAnGe.
improved FineneSS Control
Before
Upgrade
50 Mesh 100 Mesh 200 Mesh
Fineness
Control
Range
improvEd finEnEss And control
In FIeld trIAlS, the Pv-PrO 89
SyStem delIvered ImPrOved
FIneneSS Over the entIre
PulverIzer OPerAtInG rAnGe.
utIlIzInG the externAl lInkAGe,
COAl FIneneSS WAS AdjuSted
tO delIver the OPtImum
COmBuStIOn COndItIOnS WIth
the leASt AmOunt OF erOSIOn.
rEcovErEd cApAcity & poWEr sAvings
5/29/09 2:02:40 PM
results have
shown significant
improvements in mill
operation that
provide:
PERFORMANCE
RECOVERY &
OPTIMIZATION
At same conditions,
following
Pv-PrO 89
installation:
LOWER AMPS
LOWER MILL DP
and
ADJUSTABLE
FINENESS

PV-Pro 89 System Pays for itself
rOI CAlCulAtIOn
COnSIderAtIOnS
conSidering the benefitS of increASed
cAPAcity And/or fineneSS, roi cAn be
cAlculAted bASed uPon the following
conSiderAtionS.
InCreASed ASh SAleS | due to unburned
carbon (lOI) reduction
lOWer Fuel COSt & GreenhOuSe GAS
reduCtIOn | due to heat rate (hr)
improvement
reduCed SOOt BlOWInG SteAm &
WAter WAll WAShInG | due to furnace
slagging reduction
reduCed In-FurnACe emISSIOnS | due to
improved ability to stage combustion
reduCed WAter WAll WAStAGe
(PreSSure PArt FAIlure) | due to improved
combustion
mOre mW tO Sell | due to mill power and
fan power reduction
reduCed O&m COSt/ ImPrOved
AvAIlABIlIty | due to extended time Between
Overhauls
SuPerior oPerAtion JuSt weekS AwAy…
And PAybAck cAn be JuSt 6 monthS AwAy
in As littlE As 6 months
BeneFItS
A SyStemS ApproACh to
PV-Pro 89 SyStem
more eFFiCient,
longer running
pulverizerS
1 | cfd modeling facilitates a “systems”
approach to designing components that
work in coordination for more efficient
pulverizer operation
2 | System performance and components
proven in the field
3 | PV-Pro 89 System features parts easily
and typically replaced during pulverizer
overhauls, helping to avoid unnecessary
incremental costs
4 | Short installation and lead times

PWer/BGene/PvPrOS10/eng/PSer1/05.10/uS/7175 © AlStOm 2009. AlStOm, the AlStOm logo and any alternative version thereof are trademarks and service marks of AlStOm. the other names mentioned, registered or not, are
the property of their respective companies. the technical and other data contained in this document is provided for information only. AlStOm reserves the right to revise or change this data at any time without further notice. Pv-PrO
89 is a registered trademark of Alstom. ®mPS is a registered trademark of hitachi Power europe Gmbh.
Alstom Power Inc.
200 Great Pond drive
Windsor, Ct 06095-0500
tel: 860.285.2100
Fax: 860.285.3101
www.power.alstom.com